123438830 has 8 divisors (see below), whose sum is σ = 222189912. Its totient is φ = 49375528.

The previous prime is 123438803. The next prime is 123438851. The reversal of 123438830 is 38834321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6171932 + ... + 6171951.

It is an arithmetic number, because the mean of its divisors is an integer number (27773739).

Almost surely, 2^123438830 is an apocalyptic number.

123438830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123438830 is a deficient number, since it is larger than the sum of its proper divisors (98751082).

123438830 is a wasteful number, since it uses less digits than its factorization.

123438830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12343890.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 123438830 is about 11110.3028761596. The cubic root of 123438830 is about 497.9097135828.

The spelling of 123438830 in words is "one hundred twenty-three million, four hundred thirty-eight thousand, eight hundred thirty".